CN108757884A - A kind of lightweight commercial car main reducer of middle axle assembly - Google Patents
A kind of lightweight commercial car main reducer of middle axle assembly Download PDFInfo
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- CN108757884A CN108757884A CN201810720566.XA CN201810720566A CN108757884A CN 108757884 A CN108757884 A CN 108757884A CN 201810720566 A CN201810720566 A CN 201810720566A CN 108757884 A CN108757884 A CN 108757884A
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- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 33
- 108090000565 Capsid Proteins Proteins 0.000 claims abstract description 40
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 16
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 5
- 239000000428 dust Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 230000000712 assembly Effects 0.000 abstract description 3
- 238000000429 assembly Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/32—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using fluid pressure actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H48/00—Differential gearings
- F16H48/06—Differential gearings with gears having orbital motion
- F16H48/08—Differential gearings with gears having orbital motion comprising bevel gears
- F16H2048/085—Differential gearings with gears having orbital motion comprising bevel gears characterised by shafts or gear carriers for orbital gears
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Retarders (AREA)
Abstract
The present invention provides a kind of lightweight commercial car main reducer of middle axle assemblies, in the assembly torque in, the distribution of rear axle be to be realized by two axle shaft gears that inter-axle differential is realized, and a pair of of roller gear in offbeat form, to realize torque to jackshaft and rear axle transmission on same straight line；Inter-axle differential left housing and input shaft collection, the right shell of inter-axle differential and shaft space difference speed locking fixed tooth set are integrated, and inter-wheel differential left housing is integrated with driven wheel of differential；Drive bevel gear carries guide bearing structure using cantilevered, and through-hole is equipped in the middle part of axle journal, and perforation axis extends there through；Total middle housing part is made of procapsid, reducing gearbox and support of bearing three parts；The support of bearing simultaneously supports two bearings and is equipped with several reinforcing ribs；Structure of the invention is compact, number of parts is few, and volume read-out is few, and overall weight is light, can effectively reduce vehicle power train vibrating noise, is conducive to the lightweight and energy-saving and emission-reduction of commercial car.
Description
Technical field
The invention belongs to auto manufacturings, are related to a kind of lightweight commercial car main reducer of middle axle assembly, be suitable for drawing,
The commercial car such as loading are conducive to automotive light weight technology, improve efficiency and fuel-economy type.
Background technology
International commercial vehicle towards lightweight, high efficiency, low oil consumption trend development.Commercial car is again with tractor, loading
Vehicle accounting is maximum, therefore tractor load-carrying vehicle main reducing gear of drive axle lightweight and transmission efficiency need to be promoted.Domestic almost institute
The main reducer of middle axle of traction truck is made with a pair of of spiral bevel gear using a pair of of roller gear as a point torsion device
For deceleration device, along with two differential assemblies, axle assembly, shell and other loose mails composition are penetrated through.There are following for its structure
Disadvantage：1, retarder weight is big, is unfavorable for vehicle lightweight and fuel economy.2, complicated, amount of parts is more, raw
Production, maintenance process poor performance.3, overall size is big, volume read-out is big, power loss is more.4, perforation axis position is poor, causes to pass
Moving axis angle is big, and vibrating noise is big.5, small speed ratio jackshaft scheme arrangement is difficult.
Invention content
The present invention provides it is a kind of it is compact-sized, light-weight, volume read-out is few, efficient, production and use cost are low, noise
Low lightweight commercial car main reducer of middle axle assembly.Realize that main reducer of middle axle drop weight 35Kg or more is driven conducive to vehicle simultaneously
System's arrangement.
In order to solve the above technical problems, the present invention adopts the following technical scheme that realization：
A kind of lightweight commercial car main reducer of middle axle assembly, which is characterized in that by input flange and inter-axle differential portion
Divide, drive bevel gear and reducing gearbox body portion, shaft space difference speed lock section point, inter-wheel differential part and perforation axle portion are grouped as；
Input flange and inter-axle differential part structure be include a procapsid, in procapsid there are one between centers it is poor
Fast device left housing and a right shell of inter-axle differential are bolted to form a semi-enclosed shell knot by multiple inter-axle differentials
Structure, that is, inter-axle differential shell, there are four inter-axle differential planet gear pad, four between centers are poor for inter-axle differential shell body inside
Fast device planetary gear, a cross axle, a left half axle gear and an inter-axle differential axle shaft gear gasket, four between centers are poor
Fast device planetary gear is attached separately on four axle journals of cross axle, and four collar ends of cross axle are securely fitted in inter-axle differential
In cross bore between left housing and the right shell of inter-axle differential, between each inter-axle differential planetary gear and the right shell of inter-axle differential
It is respectively arranged with an inter-axle differential planet gear pad, four inter-axle differential planetary gears are engaged with left half axle gear, left
Inter-axle differential axle shaft gear gasket is housed, a ball bearing is mounted on input shaft between axle shaft gear and the right shell of inter-axle differential
Between procapsid, the rear end face of ball bearing is limited by the shaft shoulder of procapsid, and by one be sleeved on input flange after
Input terminal adjustment ring outside end, which is connect by external screw thread with procapsid, is fixed ball bearing front end face；Input flange with it is defeated
Enter axis to connect by spline and locked by the input flange locking nut that input shaft nose threads connect, lock pin is threadably secured
Mounted on procapsid front end to be limited to the rotation of input terminal adjustment ring, prevent input terminal adjustment ring from loosening, dust cover mistake
It is full of to be fitted in the middle part of input flange and plays dustproof effect to oil sealing；The right shell section of inter-axle differential has a circle tooth-shape structure suitable
In shaft space difference speed locking fixed tooth set, inter-axle differential left housing is designed to integral structure with input shaft, reduces part category；
Drive bevel gear and reducing gearbox body portion include drive bevel gear locking nut, right axle shaft gear, mobile tooth set,
Drive bevel gear bearing, the drive bevel gear with central through hole, drive bevel gear guide bearing, reducing gearbox, the support of bearing
With support of bearing bolt, the support of bearing is bolted to formation reducer shell assembly on reducing gearbox by the support of bearing, subtracts
Fast device shell is supported on the middle part of the gear shaft of drive bevel gear by two drive bevel gear bearings, and mobile tooth set passes through internal spline
It is connect with the external splines fixing assembling of right axle shaft gear, the gear shaft front end that right axle shaft gear passes through internal spline and drive bevel gear
External splines assembly, drive bevel gear front end face is by a drive bevel gear locking nut by right axle shaft wheel gear locking；Bearing
Holder include one for assemble inter-wheel differential right bearing inter-wheel differential right bearing mounting hole, one for assemble actively
The drive bevel gear guide bearing mounting hole of bearing of pinion pilot, the front end of drive bevel gear pass through drive bevel gear guiding axis
Hold be supported in drive bevel gear guide bearing mounting hole, the support of bearing at the same equipped with inter-wheel differential right bearing outer ring and lead
To bearing, the reserved drive bevel gear guide bearing mounting hole of assembly rear bearing rack and centerline hole weight in drive bevel gear
It closes, axis is penetrated through convenient for subsequent installation；
Shaft space difference speed lock section point：Differential lock cylinder is threadedly attached on reducing gearbox, before shift fork axle carries spindle nose
Portion is located in differential lock cylinder, and there are one spring pockets in shift fork axle between the spindle nose and reducing gearbox of shift fork axle, an O shape
Ring engages with differential lock cylinder inner wall in the groove of shift fork shaft head, forms the sealing of compressed air；Differential lock cylinder
For outside dress there are one the union elbow being connected to differential lock cylinder interior, shift fork is located at differential by split pin connection in shift fork axle
On shift fork axle rear portion outside lock cylinder, differential lock adjustment bolt and differential-lock control assembly are on procapsid；Differential lock tune
Whole bolt realizes the limit to shift fork axle rear portion end face by adjusting the length for being threaded into procapsid, differential-lock control assembly
Coordinating at the upper ledge of contact and shift fork, moving left and right for shift fork causes moving up and down for differential-lock control assembly contact, from
And seem to realize the engagement and disconnection of switch；
Inter-wheel differential part：Driven wheel of differential integrates with inter-wheel differential left housing and constitutes driven wheel of differential and difference
Cruciform vent is provided in fast device left housing, driven wheel of differential and differential mechanism left housing, inter-wheel differential left housing is right with inter-wheel differential
Shell is fixedly connected by multiple inter-wheel differential bolts constitutes inter-wheel differential shell, and there are four between wheel for dress inside inter-wheel differential shell
Differential pinion gear, four inter-wheel differential planet gear pads, four planetary gear shafts, two inter-wheel differential half axle gears
Wheel gasket and two axle shaft gears, the flank of tooth of two axle shaft gears are engaged with inter-wheel differential planetary gear, one of them half
The rear flank of shaft gear is coordinated by an axle shaft gear gasket and driven wheel of differential and inter-wheel differential left housing, another semiaxis
The rear flank of gear is coordinated by another axle shaft gear gasket and the right shell of inter-wheel differential, and four planetary gear shafts are mounted in driven
In cruciform vent in bevel gear and differential mechanism left housing, four inter-wheel differential planetary gears are attached separately to four planetary gear shafts
On, inter-wheel differential planetary gear can be rotated around the axle journal of planetary gear shaft；There is inter-wheel differential outside inter-wheel differential shell
Right bearing and inter-wheel differential left bearing；Inter-wheel differential right bearing installation of the inter-wheel differential right bearing on the support of bearing
Kong Zhong has in inter-wheel differential right bearing mounting hole inter-wheel differential bearing adjust pad to be mounted in inter-wheel differential right axle bearing outer-ring
The adjustment of driven wheel of differential and differential mechanism left housing in the upward position of axletree is realized between the support of bearing；Inter-wheel differential left axle
It is housed in the bearing hole being made of reducing gearbox and bearing cap, bearing cap is fixed on reducing gearbox by bolt of bearing cap and is taken turns
Between differential mechanism right bearing and inter-wheel differential left bearing inter-wheel differential adjustment ring pre-tightened by inter-wheel differential adjustment ring pass through lock
Piece and locking plate bolt are fixed on bearing cap, and there are one grooves for each planetary gear shaft, wherein there are four inter-wheel differentials
The rear end of bolt is inserted into the groove of planetary gear shaft, and position-limiting action is formed, and prevents planetary gear shaft vibration, differential between four wheels
Device planetary gear is separately mounted to the flank engagement of two axle shaft gears on the axle journal of four planetary gear shafts and with both sides；Often
An inter-wheel differential planetary gear is respectively arranged between a inter-wheel differential planetary gear and driven wheel of differential and differential mechanism left housing
Gasket；
Perforation shaft portion structure be：One perforation axle bearing is with perforation axis rear portion interference fit and by penetrating through axis
On boss limit, perforation aixs cylinder edge by spline with perforation axis cooperation to perforation axle bearing limit, by perforation axle lock nut
It is fixed；It penetrates through aixs cylinder edge outer cover dress and is resisted against the rear end of perforation axle bearing there are one axial adjustment ring, perforation axial adjustment ring is penetrated through
On face, penetrates through between axial adjustment ring and perforation aixs cylinder edge and perforation shafting oil envelope is installed；
Procapsid in the flange and inter-axle differential part and subtracting in drive bevel gear and reducing gearbox body portion
Fast device shell is bolted together by front housing connection, inter-axle differential planetary gear and the engagement of right axle shaft gear so that power
It can be transmitted to jackshaft；In drive bevel gear and drive bevel gear and inter-wheel differential part in reducing gearbox body portion from
The flank engagement of dynamic bevel gear and the driven wheel of differential in differential mechanism left housing realizes the transmission of power；It inputs flange and between centers is poor
Conduct after fast device part, drive bevel gear and reducing gearbox body portion, shaft space difference speed lock section point and the assembly of inter-wheel differential part
One entirety refills to be fitted in axle housing and is later fixed axle housing and reducing gearbox by retarder connection bolt, finally, will penetrate through
Axle portion is distributed into axle housing rear portion and is fixed with axle housing rear portion by perforation axle bolt by axial adjustment ring is penetrated through, and perforation axis passes through bearing branch
Drive bevel gear guide bearing mounting hole, reducing gearbox and the right shell of inter-axle differential and perforation axis front end on frame and left half axle tooth
Wheel by spline fitted connect, cross axle be sleeved on perforation axis outside but not with penetrate through axis contact, drive bevel gear by itself
Central through hole is sleeved on outside perforation axis but not with perforation axis and contacts, therefore cross axle and drive bevel gear can opposite perforation axis
It rotates but is not contacted with perforation axis, right axle shaft gear is fixedly connected on drive bevel gear front end by spline.
Further technical solution includes：
It is provided with adjust pad between the rear end face of ball bearing and the shaft shoulder of procapsid, it is prominent by adjusting gasket adjustment input
The position of edge and inter-axle differential part in procapsid axial direction.
O shape rubber seal, input terminal adjustment ring and inter-axle differential are provided between input terminal adjustment ring and procapsid
Oil sealing is provided between left housing, sealing is realized in front end face and the oil sealing cooperation of fixed ball bearing.
Setting is there are one spacer between two drive bevel gear bearings, the drive bevel gear bearing in front of the front end face of spacer
Between setting there are one No. 1 adjust pad, set between the rear end face and drive bevel gear of the drive bevel gear bearing at spacer rear
No. 2 adjust pads there are one setting.
There is two rows of be used for and the fixed bolt hole of external equipment, the installation of inter-wheel differential right bearing on the support of bearing
There is a plurality of reinforcing rib between plane where hole and the plane where drive bevel gear guide bearing mounting hole.
It is located on procapsid below the right shell of inter-axle differential and is provided with the bleeder plug being connected to front housing intracoelomic cavity.
Compared with prior art the beneficial effects of the invention are as follows：
The main reducer of middle axle assembly, torque transmitting characteristic are：Cancel one in existing main reducer of middle axle structure
To roller gear and cylindrical gear shaft, it is total that torque by inter-axle differential left half axle gear distributes to jackshaft via drive bevel gear
At right axle shaft gear distributes to rear axle assy via perforation axis；Benefit be speed reducer assembly is small, parts are few, it is light-weight,
Volume read-out is few.The input of jackshaft power with output on same straight line, benefit be can reduce vehicle transmission shaft horizontal and
Angle arrangement on vertical direction is conducive to extend shaft universal-joint service life, contribute to reduce vehicle vibrating noise
Entire transmission system of chassis ride comfort.The inter-axle differential its main feature is that：Only left half axle gear is mounted in differential carrier,
Right axle shaft gear is connect and is locked with drive bevel gear by spline；Inter-axle differential left housing and input shaft integrated design, lead to
It crosses spline to connect with input flange, the right shell of inter-axle differential covers Integrated design with shaft space difference speed locking fixed tooth；Benefit is number of components
Amount is few, and assembly is simple.Its feature of the inter-wheel differential：Driven wheel of differential and differential mechanism left housing integrated design, differential axle
It holds and uses an adjustment ring；Benefit is that number of parts is few, and assembly is simple easy to adjust.The drive bevel gear feature：Using outstanding
The arm-type arrangement with guide bearing, drive bevel gear axle journal are passed therethrough using hollow type design convenient for perforation axis；
Benefit is that drive bevel gear rigidity of support is good, light-weight.The gear parts of drive bevel gear can design slightly larger, and benefit is profit
Whole bridge minimum speed ratio can be realized close to 2, to improve vehicle fuel economy in small speed ratio scheme arrangement.The quantization commercial car
Main reducer of middle axle assembly shell feature：It is made of front housing, reducing gearbox and support of bearing three parts；The support of bearing simultaneously supports
Drive bevel gear guide bearing and inter-wheel differential left bearing, and several reinforcing ribs are equipped with to add the support of bearing in support zone
Rigidity.
The main reducer of middle axle comprehensive performance of this invention improves a lot compared with existing product：May be implemented to drop weight 35Kg with
On, middle rear axle torque 1:1 distribution reduces volume read-out 4L or more, and part integrated level is high, quantity is few, transmission efficiency, noise are small,
Conducive to enterprise's production cost and customer using cost is reduced, it is conducive to automotive energy-saving emission-reducing, economical and efficient.
Description of the drawings
The present invention will be further described below with reference to the drawings：
Fig. 1 show a kind of structural schematic diagram of heretofore described lightweight commercial car main reducer of middle axle assembly.
Fig. 2 show input flange in a kind of heretofore described lightweight commercial car main reducer of middle axle assembly and
Inter-axle differential part partial structural diagram.
Fig. 3 show the drive bevel gear in a kind of heretofore described lightweight commercial car main reducer of middle axle assembly
And reducing gearbox body portion.
Fig. 4 show the lock of the shaft space difference speed in a kind of heretofore described lightweight commercial car main reducer of middle axle assembly
Part partial structural diagram.
Fig. 5 show the inter-wheel differential in a kind of heretofore described lightweight commercial car main reducer of middle axle assembly
Part partial structural diagram.
Fig. 6 show the perforation shaft portion in a kind of heretofore described lightweight commercial car main reducer of middle axle assembly
Partial structural diagram.
Fig. 7 show zero of the label 30 in a kind of heretofore described lightweight commercial car main reducer of middle axle assembly
Part bearing support structure schematic diagram.
In figure：1. flange locking nut is inputted, 2. input flanges, 3. dust covers, 4. inter-axle differential left housings, 5. oil sealings,
6.O shape rubber seal, 7. input terminal adjustment rings, 8. lock pins, 9. procapsids, 10. ball bearings, 11. adjust pads, 12. left half
Shaft gear, 13. inter-axle differential axle shaft gear gaskets, 14. inter-axle differential planet gear pads, 15. inter-axle differential planets
Gear, 16. cross axles, the right shell of 17. inter-axle differentials, 18. inter-axle differential bolts, 19. bleeder plugs, 20. active conical tooth wheel locks
Tight nut, 21. right axle shaft gears, 22. movement tooth sets, 23. drive bevel gear bearings, 24. the first adjustment gaskets, 25. spacers,
26. second adjustment gasket, 27. drive bevel gears, 28. drive bevel gear guide bearings, 29. reducing gearboxes, 30. supports of bearing,
31. support of bearing bolt, 32. bearing caps, 33. bolt of bearing cap, 34. inter-wheel differential right bearings, 35. inter-wheel differential left axles
It holds, 36. inter-wheel differential axle shaft gear gaskets, 37. axle shaft gears, 38. inter-wheel differential planetary gears, 39. inter-wheel differentials
Planet gear pad, 40. planetary gear shafts, 41. driven wheel of differential and differential mechanism left housing, the right shell of 42. inter-wheel differentials, 43. wheels
Between differential bolt, 44. inter-wheel differential bearing adjust pads, 45. inter-wheel differential adjustment rings, 46. locking plates, 47. locking plate spiral shells
Bolt, 48. differential lock adjustment bolts, 49. differential-lock control assemblies, 50. shift forks, 51. split pins, 52. shift fork axles, 53.O shape rings,
54. spring, 55. differential lock cylinders, 56. union elbows, 57. perforation axis, 58. perforation axle bearings, 59. perforation axial adjustment rings, 60.
Penetrate through shafting oil envelope, 61. perforation aixs cylinder edge, 62. perforation axle lock nuts, 63. axle housings, 64. retarders connection bolt, 65. perforations
Axis connection bolt, 66. front housings connect bolt, 67. inter-wheel differential right bearing mounting holes, 68. drive bevel gear guide bearings peace
Fill hole, 69. reinforcing ribs, 70. bolts hole.
Specific implementation mode
The present invention is explained in detail below in conjunction with the accompanying drawings：
A kind of main reducer of middle axle assembly (Fig. 1), by input flange and inter-axle differential part (Fig. 2), drive bevel gear
And reducing gearbox body portion (Fig. 3), shaft space difference speed lock section point (Fig. 4), inter-wheel differential part (Fig. 5), perforation shaft portion (figure
6), five parts form.
The structure for inputting flange and inter-axle differential part is as shown in Figure 2：Including a procapsid 9, have in procapsid 9
One inter-axle differential left housing 4 and the right shell 17 of an inter-axle differential form one by the connection of multiple inter-axle differential bolts 18
Semi-enclosed shell structure, that is, inter-axle differential shell, there are four inter-axle differential planetary gear pads for inter-axle differential shell body inside
The 16, left half axle gears 12 of the cross axle of inter-axle differential planetary gear 15, one of piece 14, four and an inter-axle differential half
Shaft gear gasket 13.Four inter-axle differential planetary gears 15 are attached separately on four axle journals of cross axle 16, cross axle 16
Four collar ends are securely fitted in the cross bore between inter-axle differential left housing 4 and the right shell of inter-axle differential 17, each axis
Between be respectively arranged with an inter-axle differential planet gear pad 14 between differential pinion gear 15 and the right shell of inter-axle differential 17, four
A inter-axle differential planetary gear 15 is engaged with left half axle gear 12, between left half axle gear 12 and the right shell of inter-axle differential 17
Equipped with inter-axle differential axle shaft gear gasket 13, a ball bearing 10 is mounted between input shaft and procapsid 9, passes through procapsid
9 shaft shoulder limits the rear end face of ball bearing 10, and the input terminal adjustment ring being sleeved on outside 2 rear end of input flange by one
7 are connect with procapsid 9 by external screw thread 10 front end face of ball bearing are fixed, rear end face and the procapsid 9 of ball bearing 10
It is provided with adjust pad 11 between the shaft shoulder, input flange and inter-axle differential part are adjusted in procapsid 9 by adjusting gasket 11
Position in axial direction is provided with O shapes rubber seal 6, input terminal adjustment ring 7 and axis between input terminal adjustment ring 7 and procapsid 9
Between oil sealing 5 is provided between differential mechanism left housing 4, sealing is realized in front end face and the cooperation of oil sealing 5 of fixed ball bearing 10.
The input flange locking screw that input flange 2 is connect by spline with input shaft, and connected by input shaft nose threads
Mother 1 locks, and lock pin 8 is threadably secured mounted on 9 front end of procapsid to be limited to the rotation of input terminal adjustment ring 7, is prevented
Only input terminal adjustment ring 7 loosens.3 interference of dust cover is fitted in the dustproof effect played in the middle part of input flange 2 to oil sealing 5.This portion
In point, right 17 section of shell of inter-axle differential has a circle tooth-shape structure to be equivalent to shaft space difference speed locking fixed tooth set, and inter-axle differential is left
Shell 4 is designed to integral structure with input shaft, reduces part category.
Drive bevel gear and reducing gearbox body portion are as shown in Figure 3：Including drive bevel gear locking nut 20, right axle shaft tooth
Wheel 21, mobile tooth set 22, drive bevel gear bearing 23, adjust pad 24, spacer 25, adjust pad 26, with central through hole
Drive bevel gear 27, drive bevel gear guide bearing 28, reducing gearbox 29, the support of bearing 30, support of bearing bolt 31.Bearing branch
Frame 30 is connected on reducing gearbox 29 formation reducer shell assembly by support of bearing bolt 31, the reducer shell assembly with
For traditional structure compared to having the advantages that small, light-weight, volume read-out is few, reducing gearbox 29 passes through two drive bevel gear bearings
23 are supported on the middle part of the gear shaft of drive bevel gear 27, are arranged between two drive bevel gear bearings 23 there are one spacer 25,
There are one No. 1 adjust pad 24, the masters at spacer rear for setting between drive bevel gear bearing 23 in front of the front end face of spacer 25
There are one 26, No. 1 adjust pads 24 of No. 2 adjust pads for setting between the rear end face and drive bevel gear 27 of dynamic bevel gear bearing 23
And spacer 25 realizes that the axial position of drive bevel gear 27 is realized in the adjustment of 23 pretightning force of drive bevel gear bearing, No. 2 adjust pads 26
The fine tuning set.Mobile tooth set 22 is connect by internal spline with the external splines fixing assembling of right axle shaft gear 21, right axle shaft gear
21 are assembled by internal spline and the external splines of the gear shaft front end of drive bevel gear 27, and 27 front end face of drive bevel gear passes through one
Drive bevel gear locking nut 20 locks right axle shaft gear 21.In this part, the support of bearing 30 shown in Fig. 7 includes a use
It is oriented in the inter-wheel differential right bearing mounting hole 67, one of assembly inter-wheel differential right bearing 34 for assembling drive bevel gear
The drive bevel gear guide bearing mounting hole 68 of bearing 28, the front end of drive bevel gear 27 pass through drive bevel gear guide bearing 28
It is supported in drive bevel gear guide bearing mounting hole 68, the support of bearing 30 is equipped with the outer ring of inter-wheel differential right bearing 34 simultaneously
In the drive bevel gear guide bearing mounting hole 68 and drive bevel gear 27 reserved with guide bearing 28, assembly rear bearing rack 30
Centerline hole overlaps, and axis is penetrated through convenient for subsequent installation.Have on the support of bearing 30 two rows of for fixed with external equipment
Bolt hole 70, the plane where inter-wheel differential right bearing mounting hole 67 and 68 place of drive bevel gear guide bearing mounting hole
There is a plurality of reinforcing rib 69 between plane.
Shaft space difference speed lock section point is as described in Figure 4：Differential lock cylinder 55 is threadedly attached on reducing gearbox 29, shift fork axle
52 fronts with spindle nose are located in differential lock cylinder 55, and there are one springs 54 between the spindle nose and reducing gearbox 29 of shift fork axle 52
It being sleeved in shift fork axle 52, an O-ring 53 engages in the groove on 52 head of shift fork axle with 55 inner wall of differential lock cylinder,
The sealing of compressed air is formed, there are one the union elbows being connected to 55 inside of differential lock cylinder for 55 outside dress of differential lock cylinder
56, shift fork 50 is connected to by split pin 51 on 52 rear portion of shift fork axle that shift fork axle 52 is located at outside differential lock cylinder 55, differential
Adjustment bolt 48 and differential-lock control assembly 49 are locked on procapsid 9.Differential lock adjustment bolt 48 is by adjusting being threaded into
The length of procapsid 9 realizes the limit to shift fork axle rear portion end face, the top of the contact and shift fork 50 of differential-lock control assembly 49
Prominence coordinates, and moving left and right for shift fork 50 causes moving up and down for 49 contact of differential-lock control assembly, is opened to seem to realize
The engagement and disconnection of pass.
Inter-wheel differential part is as shown in Figure 5：Driven wheel of differential and inter-wheel differential left housing integrate constitute it is driven
Cruciform vent, inter-wheel differential left housing are provided in bevel gear and differential mechanism left housing 41, driven wheel of differential and differential mechanism left housing 41
It is fixedly connected by multiple inter-wheel differential bolts 43 with the right shell 42 of inter-wheel differential and constitutes inter-wheel differential shell, inter-wheel differential
There are four the planetary gears of inter-wheel differential planet gear pad 39, four of inter-wheel differential planetary gear 38, four for dress inside shell
40, two inter-wheel differential axle shaft gear gaskets 36 of axis and two axle shaft gears 37, the flank of tooth of two axle shaft gears 37 with wheel
Between differential pinion gear 38 engage, the rear flank of one of axle shaft gear 37 by an axle shaft gear gasket 36 with it is driven
Bevel gear and inter-wheel differential left housing 41 coordinate, and the rear flank of another axle shaft gear 37 passes through another axle shaft gear gasket 36
Coordinate with the right shell 42 of inter-wheel differential, cross of four planetary gear shafts 40 in driven wheel of differential and differential mechanism left housing 41
Kong Zhong, four inter-wheel differential planetary gears 38 are attached separately in four planetary gear shafts 40 and can be around planetary gear shafts 40
Axle journal rotates.There are inter-wheel differential right bearing 34 and inter-wheel differential left bearing 35 outside inter-wheel differential shell.Inter-wheel differential
Right bearing 34 is in the inter-wheel differential right bearing mounting hole 67 on the support of bearing 30, inter-wheel differential right bearing mounting hole 67
In have inter-wheel differential bearing adjust pad 44 be mounted between 34 outer ring of inter-wheel differential right bearing and the support of bearing 30, realize from
The adjustment of dynamic bevel gear and differential mechanism left housing 41 in the upward position of axletree.Inter-wheel differential left bearing 35 is mounted in by reducing gearbox
29 and bearing cap 32 form bearing hole in, bearing cap 32 by bolt of bearing cap 33 be fixed on reducing gearbox 29 take turns between differential
Device right bearing 34 and inter-wheel differential left bearing 35 are pre-tightened by inter-wheel differential adjustment ring 45, and inter-wheel differential adjustment ring 45 passes through
Locking plate 46 and locking plate bolt 47 are fixed on bearing cap 32.There are one grooves for each planetary gear shaft 40, wherein there are four wheels
Between differential bolt 43 rear end be inserted into planetary gear shaft 40 groove in, formed position-limiting action, prevent planetary gear shaft 40 go here and there
It is dynamic.Four inter-wheel differential planetary gears 38 are separately mounted to the half axle gear on the axle journal of four planetary gear shafts 40 and with both sides
Take turns 37 flank engagements.It is respectively arranged with one between each inter-wheel differential planetary gear 38 and driven wheel of differential and differential mechanism left housing 41
Inter-wheel differential planet gear pad 39.
It is as shown in Figure 6 to penetrate through shaft portion：One perforation axle bearing 58 and perforation 57 rear portion interference fit of axis, and pass through
The boss limit on axis 57 is penetrated through, perforation aixs cylinder edge 61 limits perforation axle bearing 58 with the cooperation of perforation axis 57 by spline, by
Axle lock nut 62 is penetrated through to fix.This part further includes perforation axial adjustment ring 59, perforation shafting oil envelope 60.It penetrates through outside aixs cylinder edge 61
There are one perforation axial adjustment ring 59, perforation axial adjustment rings 59 to be resisted against on the rear end face of perforation axle bearing 58 for suit, penetrates through axis tune
Perforation shafting oil envelope 60 is installed between the domain 59 and perforation aixs cylinder edge 61.
Procapsid 9 in flange of the present invention and inter-axle differential part and drive bevel gear and reducing gearbox body portion
In reducing gearbox 29 by front housing connect bolt 66 link together, such inter-axle differential planetary gear 15 and right axle shaft tooth
21 engagement of wheel so that power can be transmitted to jackshaft.Drive bevel gear in this way in drive bevel gear and reducing gearbox body portion
27 and the driven wheel of differential in inter-wheel differential part and the driven wheel of differential in differential mechanism left housing 41 flank engagement, realize dynamic
The transmission of power.Input flange and inter-axle differential part, drive bevel gear and reducing gearbox body portion, shaft space difference speed lock section point and
It is refilled as a whole after the assembly of inter-wheel differential part and bolt 64 is connected by bridge by retarder after being fitted in axle housing 63
Shell 63 is fixed with reducing gearbox 29.Finally, perforation axle portion is distributed into axle housing rear portion and axis tune will be penetrated through by perforation axle bolt 65
The domain 59 is fixed with 63 rear portion of axle housing.Penetrate through axis 57 pass through the support of bearing 30 on drive bevel gear guide bearing mounting hole 68,
Reducing gearbox 29 and the right shell 17 of inter-axle differential and perforation axis 57 front end is connect with left half axle gear 12 by spline fitted, cross
Axis 16 is sleeved on 57 outside of perforation axis but is not contacted with perforation axis, and drive bevel gear 27 is sleeved on perforation axis by the central through hole of itself
57 outsides but do not contacted with perforation axis 57, thus cross axle 16 and drive bevel gear 27 can opposite perforation axis 57 rotate but not
Contact, right axle shaft gear 21 is fixedly connected by spline is connected to 27 front end of drive bevel gear so that power can be passed to rear axle
It is defeated.
Driven wheel of differential and differential mechanism left housing 41 can also be that a driven wheel of differential and a differential mechanism left housing pass through spiral shell
Bolt is fixedly connected with integral structure, and described four planetary gear shafts 40 can also be that there are four the cross axle knots of axis for a tool
Structure.
The support of bearing 30 can also only support an inter-wheel differential right bearing 34, can not also be arranged in total and lead
To bearing 28.
Above five part (Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6) constitutes complete main reducer of middle axle assembly (Fig. 1).It realizes
The superior lightweight commercial car main reducer of middle axle assembly of one comprehensive performance.Its operation principle is：Torque is defeated from input flange 2
Enter, input flange 2 drives inter-axle differential left housing 4, the right shell 17 of inter-axle differential to be rotated together with cross axle 16 by spline
Cross axle 16 is imparted power to, then passes to 12 He of left half axle gear engaged via inter-axle differential planetary gear 15
Right axle shaft gear 21.A part of torque is passed to perforation axis 57 by left half axle gear 12 by spline, then via perforation aixs cylinder edge
61 pass to rear axle.Another part torque is passed to drive bevel gear 27, drive bevel gear by right axle shaft gear 21 by spline
27 deliver torque to driven wheel of differential and differential mechanism left housing 41 by gear engagement, to realize transmission of the power to jackshaft.
Rear axle vehicle wheel rotational speed is identical in when left half axle gear 12 and identical 21 rotating speed of right axle shaft gear.Inter-axle differential planet tooth at this time
It does not relatively rotate between wheel 15 and cross axle 16, torque 1:1 distributes to middle rear axle, is equivalent to inter-axle differential not work
Make；Such case is happened at the case where shaft space difference speed is locked, and both the end-tooth of the right shell of inter-axle differential 17 covers 22 ends with mobile tooth
Face tooth engagement or inter-axle differential disengage and the identical situation of middle rear axle vehicle wheel rotational speed.When left half axle gear 12 and right axle shaft
When 21 rotating speed difference of gear, middle rear axle vehicle wheel rotational speed is different.It is sent out between inter-axle differential planetary gear 15 and cross axle 16 at this time
Raw to relatively rotate, torque distributes to middle rear axle by a certain percentage.Its deceleration principle be it is conventional by drive bevel gear 27 and from
Dynamic bevel gear and differential mechanism left housing 41 this speed ratio relationship of bevel gear determined.In this way, a kind of lightweight commercial car
Main gearbox assembly is achieved that the effect of deceleration torque and torque distribution.
Claims (6)
1. a kind of lightweight commercial car main reducer of middle axle assembly, which is characterized in that by input flange and inter-axle differential part,
Drive bevel gear and reducing gearbox body portion, shaft space difference speed lock section point, inter-wheel differential part and perforation axle portion are grouped as；
Input flange and the structure of inter-axle differential part be include a procapsid (9), there are one between centers in the procapsid (9)
Differential mechanism left housing (4) and a right shell of inter-axle differential (17) form one and half by the connection of multiple inter-axle differential bolts (18)
Closed shell structure, that is, inter-axle differential shell, there are four inter-axle differential planet gear pads for inter-axle differential shell body inside
(14), four inter-axle differential planetary gears (15), a cross axle (16), a left half axle gear (12) and a between centers are poor
Fast device axle shaft gear gasket (13), four inter-axle differential planetary gears (15) are attached separately to four axle journals of cross axle (16)
On, (16) four collar ends of cross axle are securely fitted between inter-axle differential left housing (4) and the right shell of inter-axle differential (17)
Cross bore in, it is poor to be respectively arranged with a between centers between each inter-axle differential planetary gear (15) and the right shell of inter-axle differential (17)
Fast device planet gear pad (14), four inter-axle differential planetary gears (15) are engaged with left half axle gear (12), left half axle
Inter-axle differential axle shaft gear gasket (13), a ball bearing (10) are housed between gear (12) and the right shell of inter-axle differential (17)
Between input shaft and procapsid (9), the rear end face of ball bearing (10) is limited by the shaft shoulder of procapsid (9),
And the input terminal adjustment ring (7) being sleeved on outside input flange (2) rear end by one is connect with procapsid (9) to ball by external screw thread
Bearing (10) front end face is fixed；Input flange (2) is connect by spline with input shaft and is connected by input shaft nose threads
Input flange locking nut (1) locking, lock pin (8) is threadably secured mounted on procapsid (9) front end with to input terminal tune
The rotation of the domain (7) is limited, and prevents input terminal adjustment ring (7) from loosening, and dust cover (3) interference is fitted in input flange (2)
Play the dustproof effect to oil sealing (5) in middle part；It is poor that the right shell of inter-axle differential (17) section has a circle tooth-shape structure to be equivalent between centers
Speed locking fixed tooth set, inter-axle differential left housing (4) are designed to integral structure with input shaft, reduce part category；
Drive bevel gear and reducing gearbox body portion include drive bevel gear locking nut (20), right axle shaft gear (21), movement
Tooth set (22), drive bevel gear bearing (23), the drive bevel gear (27) with central through hole, drive bevel gear guide bearing
(28), reducing gearbox (29), the support of bearing (30) and support of bearing bolt (31), the support of bearing (30) pass through support of bearing bolt
(31) it is connected on reducing gearbox (29) and forms reducer shell assembly, reducing gearbox (29) passes through two drive bevel gear bearings
(23) it is supported on the middle part of the gear shaft of drive bevel gear (27), mobile tooth set (22) passes through internal spline and right axle shaft gear (21)
The connection of external splines fixing assembling, right axle shaft gear (21) passes through the outer of the gear shaft front end of internal spline and drive bevel gear (27)
Spline assembles, and drive bevel gear (27) front end face is locked right axle shaft gear (21) by a drive bevel gear locking nut (20)
Tightly；The support of bearing (30) includes an inter-wheel differential right bearing mounting hole for assembling inter-wheel differential right bearing (34)
(67), a drive bevel gear guide bearing mounting hole (68) for assembling drive bevel gear guide bearing (28), initiative taper
The front end of gear (27) is supported on by drive bevel gear guide bearing (28) in drive bevel gear guide bearing mounting hole (68),
The support of bearing (30) while the outer ring equipped with inter-wheel differential right bearing (34) and guide bearing (28), assemble rear bearing rack
(30) reserved drive bevel gear guide bearing mounting hole (68) is overlapped with centerline hole in drive bevel gear (27), convenient for follow-up
Installation perforation axis；
Shaft space difference speed lock section point：Differential lock cylinder (55) is threadedly attached on reducing gearbox (29), and shift fork axle (52) carries
The front of spindle nose is located in differential lock cylinder (55), and there are one springs between the spindle nose and reducing gearbox (29) of shift fork axle (52)
(54) it is sleeved in shift fork axle (52), an O-ring (53), in the groove on shift fork axle (52) head, with differential lock cylinder
(55) inner wall engages, and forms the sealing of compressed air；There are one interior with differential lock cylinder (55) for dress outside differential lock cylinder (55)
The union elbow (56) of portion's connection, shift fork (50) are connected to shift fork axle (52) by split pin (51) and are located at differential lock cylinder (55)
On external shift fork axle (52) rear portion, differential lock adjustment bolt (48) and differential-lock control assembly (49) are on procapsid (9)；
Differential lock adjustment bolt (48) realizes the limit to shift fork axle rear portion end face by adjusting the length for being threaded into procapsid (9),
The contact of differential-lock control assembly (49) coordinates at the upper ledge of shift fork (50), and moving left and right for shift fork (50) causes differential
Lock-switch assembly (49) contact moves up and down, to seem to realize the engagement and disconnection of switch；
Inter-wheel differential part：Driven wheel of differential integrates with inter-wheel differential left housing and constitutes driven wheel of differential and differential mechanism
Cruciform vent is provided in left housing (41), driven wheel of differential and differential mechanism left housing (41), between inter-wheel differential left housing (41) and wheel
Differential right casing (42) is fixedly connected by multiple inter-wheel differential bolts (43) and constitutes inter-wheel differential shell, inter-wheel differential shell
There are four inter-wheel differential planetary gear (38), four inter-wheel differential planet gear pads (39), four planet teeth for inside dress
Wheel shaft (40), two inter-wheel differential axle shaft gear gaskets (36) and two axle shaft gears (37), two axle shaft gears (37)
The flank of tooth is engaged with inter-wheel differential planetary gear (38), and the rear flank of one of axle shaft gear (37) passes through a half axle gear
It takes turns gasket (36) with driven wheel of differential and inter-wheel differential left housing (41) to coordinate, the rear flank of another axle shaft gear (37) passes through
Another axle shaft gear gasket (36) coordinates with the right shell of inter-wheel differential (42), and four planetary gear shafts (40) are mounted in from mantle tooth
In cruciform vent in wheel and differential mechanism left housing (41), four inter-wheel differential planetary gears (38) are attached separately to four planet teeth
On wheel shaft (40), inter-wheel differential planetary gear (38) can be rotated around the axle journal of planetary gear shaft (40)；Inter-wheel differential shell
There are inter-wheel differential right bearing (34) and inter-wheel differential left bearing (35) in outside；Inter-wheel differential right bearing (34) is mounted in bearing
In inter-wheel differential right bearing mounting hole (67) on holder (30), there have in inter-wheel differential right bearing mounting hole (67) to be poor between taking turns
Fast device bearing adjust pad (44) is mounted between inter-wheel differential right bearing (34) outer ring and the support of bearing (30) and realizes from mantle
The adjustment of gear and differential mechanism left housing (41) in the upward position of axletree；Inter-wheel differential left bearing (35) is mounted in by reducing gearbox
(29) and in the bearing hole of bearing cap (32) composition, bearing cap (32) is fixed on reducing gearbox (29) by bolt of bearing cap (33)
On, inter-wheel differential right bearing (34) and inter-wheel differential left bearing (35) are by poor between inter-wheel differential adjustment ring (45) pre- bearing up pulley
Fast device adjustment ring (45) is fixed on by locking plate (46) and locking plate bolt (47) on bearing cap (32), each planetary gear shaft (40)
There are one grooves, wherein there are four in the groove that planetary gear shaft (40) is inserted into the rear end of inter-wheel differential bolt (43),
Position-limiting action is formed, planetary gear shaft (40) vibration, four inter-wheel differential planetary gears (38) is prevented to be separately mounted to four
The flank engagement of two axle shaft gears (37) on the axle journal of planetary gear shaft (40) and with both sides；Each inter-wheel differential planet
An inter-wheel differential planet gear pad (39) is respectively arranged between gear (38) and driven wheel of differential and differential mechanism left housing (41)；
Perforation shaft portion structure be：One perforation axle bearing (58) is with perforation axis (57) rear portion interference fit and by passing through
Boss limit on axis (57), perforation aixs cylinder edge (61), which is coordinated by spline with perforation axis (57), limits perforation axle bearing (58)
Position, it is fixed by perforation axle lock nut (62)；Penetrating through aixs cylinder edge (61) outer cover dress, there are one perforation axial adjustment ring (59), perforations
Axial adjustment ring (59) be resisted against perforation axle bearing (58) rear end face on, perforation axial adjustment ring (59) with perforation aixs cylinder edge (61) it
Between be equipped with perforation shafting oil envelope (60)；
Procapsid (9) in the flange and inter-axle differential part and the deceleration in drive bevel gear and reducing gearbox body portion
Device shell (29) connects bolt (66) by front housing and links together, inter-axle differential planetary gear (15) and right axle shaft gear (21)
Engagement so that power can be transmitted to jackshaft；Drive bevel gear (27) in drive bevel gear and reducing gearbox body portion and wheel
Between the flank engagement of the driven wheel of differential in differential portion and the driven wheel of differential in differential mechanism left housing (41), realize power
It transmits；It inputs between flange and inter-axle differential part, drive bevel gear and reducing gearbox body portion, shaft space difference speed lock section point and wheel
It is refilled as a whole after differential portion assembly and bolt (64) is connected by bridge by retarder after being fitted in axle housing (63)
Shell (63) is fixed with reducing gearbox (29), finally, perforation axle portion is distributed into axle housing (63) rear portion and by perforation axle bolt (65)
Perforation axial adjustment ring (59) is fixed with axle housing (63) rear portion, perforation axis (57) passes through the drive bevel gear on the support of bearing (30)
Guide bearing mounting hole (68), reducing gearbox (29) and the right shell of inter-axle differential (17) and perforation axis (57) front end and left half axle tooth
Wheel (12) is connected by spline fitted, and cross axle (16) is sleeved on perforation axis (57) outside but is not contacted with perforation axis (57), actively
Bevel gear (27) is sleeved on perforation axis (57) outside by the central through hole of itself but is not contacted with perforation axis (57), therefore cross axle
(16) it can rotate but not contacted with perforation axis (57), right axle shaft gear relative to perforation axis (57) with drive bevel gear (27)
(21) drive bevel gear (27) front end is fixedly connected on by spline.
2. a kind of lightweight commercial car main reducer of middle axle assembly according to claim 1, which is characterized in that ball bearing
(10) it is provided with adjust pad (11) between rear end face and the shaft shoulder of procapsid (9), adjusts and inputs by adjusting gasket (11)
The position of flange and inter-axle differential part in procapsid (9) axial direction.
3. a kind of lightweight commercial car main reducer of middle axle assembly according to claim 1, which is characterized in that input terminal tune
O shapes rubber seal (6), input terminal adjustment ring (7) and inter-axle differential left housing are provided between the domain (7) and procapsid (9)
(4) oil sealing (5) is provided between, sealing is realized in front end face and oil sealing (5) cooperation of fixed ball bearing (10).
4. a kind of lightweight commercial car main reducer of middle axle assembly according to claim 1, which is characterized in that two actives
Setting is there are one spacer (25) between bevel gear bearing (23), the drive bevel gear bearing (23) in front of the front end face of spacer (25)
Between setting there are one No. 1 adjust pad (24), the rear end face and active conical tooth of the drive bevel gear bearing (23) at spacer rear
There are one No. 2 adjust pads (26) for setting between taking turns (27).
5. a kind of lightweight commercial car main reducer of middle axle assembly according to claim 1, which is characterized in that the axis
Holding on holder (30) has two rows of be used for and the fixed bolt hole of external equipment (70), inter-wheel differential right bearing mounting hole (67) institute
Plane and drive bevel gear guide bearing mounting hole (68) where plane between have a plurality of reinforcing rib (69).
6. a kind of lightweight commercial car main reducer of middle axle assembly according to claim 1, which is characterized in that procapsid
(9) it is located below the right shell of inter-axle differential (17) and is provided with the bleeder plug (19) being connected to procapsid (9) inner cavity.
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| CN201810720566.XA CN108757884A (en) | 2018-07-04 | 2018-07-04 | A kind of lightweight commercial car main reducer of middle axle assembly |
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| CN201810720566.XA CN108757884A (en) | 2018-07-04 | 2018-07-04 | A kind of lightweight commercial car main reducer of middle axle assembly |
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Application publication date: 20181106 |